f = Function(log(x)^(2) / x, -10, 10)
f' = Derivative(f)
g = Function((x^(2) * ℯ^((-x))), -10, 10)
g' = Derivative(g)
h = Function(x - sin(x), -10, 10)
h' = Derivative(h)
p = Function(x / (x^(2) - 1), -10, 10)
p' = Derivative(p)
q = Function(ℯ^(x) / (x + 1), -10, 10)
q' = Derivative(q)